Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Total risk-based capital
Actual Amount	$ 258,026	$ 252,171
Actual Ratio (as a percent)	13.72%	13.54%
Minimum for adequately capitalized Amount	150,452	148,993
Minimum for adequately capitalized Ratio (as a percent)	8.00%	8.00%
Tier I risk-based capital
Actual Amount	234,459	228,827
Actual Ratio (as a percent)	12.47%	12.29%
Minimum for adequately capitalized Amount	75,207	74,476
Minimum for adequately capitalized Ratio (as a percent)	4.00%	4.00%
Leverage
Actual Amount	234,459	228,827
Actual Ratio (as a percent)	10.00%	9.75%
Minimum for adequately capitalized Amount	70,338	70,408
Minimum for adequately capitalized Ratio (as a percent)	3.00%	3.00%
Bank
Total risk-based capital
Actual Amount	248,296	239,577
Actual Ratio (as a percent)	13.24%	12.90%
Minimum for adequately capitalized Amount	150,028	148,575
Minimum for adequately capitalized Ratio (as a percent)	8.00%	8.00%
Minimum for well capitalized Amount	187,535	185,719
Minimum for well capitalized Ratio (as a percent)	10.00%	10.00%
Tier I risk-based capital
Actual Amount	224,796	219,299
Actual Ratio (as a percent)	11.99%	11.65%
Minimum for adequately capitalized Amount	74,994	75,296
Minimum for adequately capitalized Ratio (as a percent)	4.00%	4.00%
Minimum for well capitalized Amount	112,492	112,944
Minimum for well capitalized Ratio (as a percent)	6.00%	6.00%
Leverage
Actual Amount	224,796	219,299
Actual Ratio (as a percent)	9.61%	9.24%
Minimum for adequately capitalized Amount	70,176	71,201
Minimum for adequately capitalized Ratio (as a percent)	3.00%	3.00%
Minimum for well capitalized Amount	$ 116,959	$ 118,668
Minimum for well capitalized Ratio (as a percent)	5.00%	5.00%